OVA
Description
Narberal Gamma, a doppelgänger, serves within the Pleiades battle maid squad of the Great Tomb of Nazarick. Created by guild founder Nishikienrai as a final defensive measure, her purpose was to delay intruders long enough for guild members to prepare in the throne room, not to defeat powerful players breaching Nazarick's depths.

She presents as an elegant human woman with snow-white skin, sharp black eyes, and long black hair typically tied in a ponytail, resembling someone in her late teens or early twenties. Her beauty often draws comparison to the Golden Princess. She wears distinctive black maid uniform armor accented with gold and silver, along with a white bonnet. Operating in the human world under the alias "Nabe," she adopts a plain brown cloak. This human guise stems from her doppelgänger racial ability, though limited racial levels restrict her to maintaining only this single human form. Her true form resembles Pandora's Actor, featuring three long fingers per hand concealed by gloves.

Narberal harbors deep contempt for humans, viewing them as lower life forms and using derogatory terms like "vermin." Her sole exception is her sister Aureole Omega, an immortal human NPC. She typically ignores humans unless provoked but kills without hesitation if ordered, if humans disrespect her master, or if she deems them unworthy. This attitude makes her one of the two most dangerous Pleiades alongside Solution Epsilon. Despite this hostility, she exhibits unwavering loyalty to Ainz Ooal Gown, taking pride in directly supporting him. She struggles to comprehend his goal of becoming a human world hero, often unintentionally undermining his efforts through her overt disdain. She habitually uses the honorific "-sama" for Ainz, even when instructed otherwise during missions. Outside Nazarick, she remains hyper-vigilant, constantly assessing threats to Ainz and contemplating eliminating anyone perceived as rude. During Nazarick downtime, she spaces out, staring blankly. She enjoys chatting with fellow Pleiades members, general maids, and Cocytus, sharing a closer bond with him due to their creators' friendship.

Her background unfolds across key arcs:
- **The Undead King Arc:** Guarded the 9th Floor and watched over Momonga.
- **The Dark Warrior Arc:** Chosen as Ainz's adventuring partner "Nabe" for intelligence gathering. Battled Zurrernorn members during Nfirea Bareare's rescue, eliminating most before revealing her identity and using seventh-tier magic to kill Khajiit and his Skeletal Dragons after Ainz's permission.
- **The Bloody Valkyrie Arc:** Remained in E-Rantel to relay messages and guided Hamsuke to Nazarick.
- **The Search for Hamsuke Arc:** Reported Hamsuke's disappearance, aided Ainz's search borrowing his Ring of Ainz Ooal Gown, apologized profusely upon finding Hamsuke, and accepted Ainz's forgiveness.
- **The Two Leaders Arc:** Questioned Enri Emmot under Momon's orders and escorted the reprimanded Lupusregina Beta.
- **The Dark Hero's Story Arc:** Handled iron ore transactions for Ainz, rejected marriage proposals from Torkel Karan Dale Völkchenheim, accompanied Momon protecting Torkel, and confidently asserted Momon's prowess against a Gigant Basilisk.
- **The Maid Tea Party Arc:** Reported her activities and discussed caloric content in drinks during a Pleiades gathering.
- **The Men in the Kingdom Arc:** Fought alongside Momon against Jaldabaoth, battled disguised Pleiades sisters as part of Demiurge's plan to elevate Momon, and displayed intense killing intent upon learning of Entoma's near-death.
- **The Phantom Ship of Katze Plains Arc:** Discussed hobbies with Momon during downtime.

As a combatant, Narberal is a pure magic caster at level 63, specializing in lightning-based spells up to the 8th tier. Her signature spell, "Chain Dragon Lightning," summons white lightning in a dragon shape. She wields the staff Keraunos Mk-III, though rarely uses it in observed battles. She supplements her magic with limited swordsmanship from a single Fighter class level, teleportation, flight, luck-boosting spells, and monster-hostility reduction. Her "rabbit spells" (enhanced hearing, luck, and monster avoidance) manifest as visible bunny ears; using all three simultaneously triggers a hidden outfit change. Posing as an adventurer, she restricts herself to third-tier magic, spells that still surpass typical human capabilities.